Title :
MIMO Detection of 16-QAM Signaling Based on Semidefinite Relaxation
Author :
Yang, Yijin ; Zhao, Chunming ; Zhou, Peng ; Xu, Wei
Author_Institution :
Southeast Univ., Nanjing
Abstract :
We propose a computationally efficient semidefinite relaxation (SDR) of the maximum likelihood (ML) detector for 16 quadrature amplitude modulation (16-QAM) in multiple-input multiple-output (MIMO) systems. The SDR stems from a variant of the ML problem, which utilizes set operation algorithms to formulate the alphabet constraint. Theoretical analysis and numerical simulations demonstrate that the proposed method can provide improved error performance as compared to some previous detectors.
Keywords :
MIMO communication; maximum likelihood detection; quadrature amplitude modulation; 16-QAM signaling; MIMO detection; maximum likelihood detector; quadrature amplitude modulation; semidefinite relaxation; Maximum likelihood (ML) detection; multiple- input multiple-output (MIMO) systems; multiple-input multiple-output (MIMO) systems; semidefinite relaxation (SDR);
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2007.901694
